Democritus believed that the universe was composed of atoms, correctly, of course. However, at the time, Plato's and Aristotle's hypothesi were just as valid because everyone was a philosopher. There were no scientists back then.
<span>According to my knowledge, I feel the answer is -
Particles that struck the center of the atom were repelled.
Hope this helps!
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Answer:
you need only one independent variable because if not, you wont know what factors have changed your experiment.
Explanation:
By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.